Connecticut’s 1st Congressional District is represented by John B. Larson (D) in the U.S. House of Representatives. The district is one of Connecticut’s seats in the 435-member House of Representatives. After the 2020 Census, the average congressional district had 761,169 people, according to the U.S. Census Bureau, and these district boundaries were drawn during the redistricting cycle that followed.
Congressional representatives serve two-year terms and face election every even-numbered year. The next election for this seat will take place on November 3, 2026.
Population
717,481
Median Household Income
$86,832
Population and income: U.S. Census Bureau, American Community Survey 5-year estimates for 2019 to 2023, for district lines in effect on January 1, 2023.
Partisan Lean
D+23
2024 presidential margin (Trump vs Harris). Source: The Downballot.
District boundary, 119th Congress. Boundary data: U.S. Census Bureau TIGERweb. Map tiles: OpenStreetMap.
John B. Larson and Connecticut's 1st Congressional District
John B. Larson, a member of the Democratic Party, represents Connecticut's 1st Congressional District and has held the seat since January 6, 1999. The boundary map for the district is above and the ZIP codes it covers are listed further down this page.
Committee assignments: House Committee on Ways and Means.
The current term ends January 3, 2027. The seat is on the ballot on Tuesday, November 3, 2026. Washington office phone: 202-225-2265. Official site: larson.house.gov.
Current Representative
Rep. John B. Larson (D)
119th Congress • Democrat • Representing this district since January 6, 1999
John B. Larson currently represents Connecticut’s 1st Congressional District as a member of the Democratic Party in the United States House of Representatives. The representative’s district office helps constituents with federal casework, such as Social Security claims and veterans’ benefits.
2026 Election
On the ballot November 3, 2026
- Luke Bronin, Democratic
- Amy Chai, Republican
Connecticut had not posted its November candidate list when this was checked. This list shows the Democratic and Republican nominees from the August 11 primaries and party endorsements; minor-party and petitioning candidates are not included yet.
Source: Connecticut Secretary of the State, August 11, 2026 primary results and party endorsements, checked September 26, 2026. Write-in candidates are not listed.
Key dates for November 3, 2026
| Register by mail | Friday, October 16 Application must be received by this date. |
|---|---|
| Register online | Friday, October 16 |
| Register in person | Friday, October 16 |
| Same-day registration | After October 16, same-day registration is available during early voting and on Election Day at each town's designated location. |
| Early in-person voting | October 19 to November 1 |
| Request a mail ballot | Monday, November 2 Request by November 2, and mail it early enough to get the ballot back in time. |
| Return a mail ballot | Must be received by the town clerk by 8 p.m. on November 3. |
| Election Day | Tuesday, November 3, 2026 |
Check your registration with the Connecticut voter lookup. Dates come from the Connecticut election office and were checked September 26, 2026. States can change deadlines, so confirm with your election office before you act.
Polling places in Connecticut are open 6 a.m. to 8 p.m., local time. Confirm your registration and polling place on the official federal voter page for Connecticut: vote.gov.
What is on the ballot nationally on November 3, 2026
Contact Your Representative
Washington Office
1501 Longworth House Office Building
Washington, DC 20515
Phone: (202) 225-2265
Online
Committee Assignments
About This District
The district covers parts of Capitol, Northwest Hills, Lower Connecticut River Valley, and Naugatuck Valley counties in Connecticut. Its largest cities are Hartford (about 121,000), Bristol (about 61,000), and Torrington (about 36,000).
This page covers Connecticut 1st District, including its current U.S. House representative, district map, ZIP codes, and 2026 election details.
Learn more about congressional districts
- What is a congressional district?
- What does a U.S. Representative do?
- What is gerrymandering?
- How congressional redistricting works
Frequently Asked Questions
Who represents Connecticut's 1st Congressional District?
John B. Larson (D) represents Connecticut's 1st Congressional District in the U.S. House of Representatives.
What political party is John B. Larson a member of?
John B. Larson is a member of the Democratic Party.
How can I contact John B. Larson?
You can reach John B. Larson by phone at 202-225-2265 or through their official website at https://larson.house.gov.
When does John B. Larson's current term end?
John B. Larson's current term in the U.S. House of Representatives ends on January 3, 2027.
Where is Connecticut's 1st Congressional District?
Connecticut's 1st Congressional District is located in the state of Connecticut and is one of the 435 voting congressional districts in the U.S. House of Representatives.
What district does John B. Larson represent?
John B. Larson has represented Connecticut's 1st Congressional District since January 6, 1999. The boundary map for the district is on this page.
Where can I see a map of John B. Larson's district?
The boundary map for Connecticut's 1st Congressional District is on this page. It is drawn from U.S. Census Bureau TIGERweb boundary files for the 119th Congress.
What committees is John B. Larson on?
John B. Larson sits on House Committee on Ways and Means. Committee assignments come from the Clerk of the House MemberData file.
Is John B. Larson still in Congress?
This site shows John B. Larson holding Connecticut's 1st Congressional District, checked against the Clerk of the House member list. All 435 House seats are on the ballot on November 3, 2026, so the answer can change with that election.
Nearby Districts in Connecticut
ZIP Codes in Connecticut's 1st Congressional District
This congressional district contains 57 ZIP codes. The most common 10 are shown below; expand the full list to see every ZIP in the district.
14 of these ZIP codes also extend into another Connecticut district, so a ZIP code here does not always identify a single representative. Examples include 06001 (also in the 5th), 06032 (also in the 5th), 06033 (also in the 2nd), 06051 (also in the 5th), 06052 (also in the 5th), 06062 (also in the 5th), 06073 (also in the 2nd), 06107 (also in the 5th).
- 06001
- 06002
- 06010
- 06016
- 06021
- 06023
- 06026
- 06027
- 06032
- 06033
View all 57 ZIP codes in this district
- 06001
- 06002
- 06010
- 06016
- 06021
- 06023
- 06026
- 06027
- 06032
- 06033
- 06035
- 06037
- 06040
- 06042
- 06051
- 06052
- 06057
- 06060
- 06061
- 06062
- 06063
- 06065
- 06067
- 06073
- 06074
- 06088
- 06090
- 06091
- 06095
- 06096
- 06098
- 06103
- 06105
- 06106
- 06107
- 06108
- 06109
- 06110
- 06111
- 06112
- 06114
- 06117
- 06118
- 06119
- 06120
- 06414
- 06416
- 06444
- 06451
- 06457
- 06459
- 06467
- 06479
- 06480
- 06489
- 06759
- 06790
ZIP-to-district boundaries sourced from the U.S. Census Bureau's 2024-07-30 Block Equivalency File for the 119th Congress. ZCTAs (ZIP Code Tabulation Areas) approximate USPS delivery ZIPs.
U.S. Senators for this state: Richard Blumenthal (D), Christopher Murphy (D)
Local surveillance camera contracts
Automated license plate reader contracts are approved locally, by city councils and county boards, not by Congress. These places in this district have a contract record documented from public sources:
Records compiled by Who Approved This, an independent public-records project. Approval dates, amounts, and end dates are cited to council agendas, minutes, and signed contracts.
Place list rebuilt from the Who Approved This public export on September 26, 2026.
Last updated September 27, 2026.
Data last checked September 26, 2026.
See how this district compares with another using Compare Districts.